- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 28/08 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
Patent holdings for IPC class F04C 28/08
Total number of patents in this class: 227
10-year publication summary
|
20
|
11
|
26
|
32
|
19
|
24
|
25
|
11
|
16
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Atlas Copco Airpower, naamloze vennootschap | 915 |
24 |
| Trane International Inc. | 1123 |
16 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
15 |
| Copeland LP | 656 |
8 |
| Toyota Industries Corporation | 1010 |
7 |
| Gardner Denver Deutschland GmbH | 58 |
6 |
| Edwards Limited | 764 |
5 |
| Project Phoenix, LLC | 52 |
5 |
| Leybold GmbH | 293 |
5 |
| Inogen, Inc. | 109 |
4 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 566 |
4 |
| Oerlikon Leybold Vacuum GmbH | 117 |
4 |
| LG Electronics Inc. | 69257 |
3 |
| Mitsubishi Electric Corporation | 43934 |
3 |
| Daikin Industries, Ltd. | 9495 |
3 |
| Johnson Controls Technology Company | 1522 |
3 |
| Clark Equipment Company | 335 |
3 |
| Emerson Climate Technologies, Inc. | 308 |
3 |
| Whirlpool S.A. | 377 |
3 |
| Pfeiffer Vacuum | 153 |
3 |
| Other owners | 100 |